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  1. Home
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  3. Tools & Machining
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  5. Cutting Tools
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  7. Porting Tools & Counterbores
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  9. Counterbores

Counterbores (927 items) - Page 4

Drill America 1/2" HSS Solid Counterbore DEWCBRSOL1/2
Drill America

1/2" HSS Solid Counterbore

Zoro # G1742154
Mfr # DEWCBRSOL1/2
product price: 
$26.15
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.9 mm 156220 6,5X2,9
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 6.5X2.9 mm

Zoro # G814376060
Mfr # 156220 6,5X2,9
product price: 
$26.99
/ea
Harvey Tool 1/16 Cutter dia. x 1/4 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 23362-C8
Harvey Tool

1/16 Cutter dia. x 1/4 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G711326380
Mfr # 23362-C8
product price: 
$58.79
/ea
Drill America No 2 .085mm Machine Screw Solid Counterbore DEWCBRSOL2
Drill America

No 2 .085mm Machine Screw Solid Counterbore

Zoro # G1744699
Mfr # DEWCBRSOL2
product price: 
$9.15
/ea
Garant Mini Counterbore for Through Holes, 180 Deg, Uncoated, 11.5X6.4 mm 155600 11,5X6,4
Garant

Mini Counterbore for Through Holes, 180 Deg, Uncoated, 11.5X6.4 mm

Zoro # G814389848
Mfr # 155600 11,5X6,4
product price: 
$41.95
/ea
Harvey Tool 0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated 23427-C3
Harvey Tool

0.4220'', 27/64 Cutter DIA x 1.0000'', 1 Flute Length - 4 FL - AlTiN Coated

Zoro # G413081587
Mfr # 23427-C3
product price: 
$138.99
/ea
Harvey Tool Counterbores - Flat Bottom 23350
Harvey Tool

Counterbores - Flat Bottom

Zoro # G201019020
Mfr # 23350
product price: 
$51.25
/ea
Garant Mini Counterbore for Through Holes, 180 Deg, Uncoated, 2.8X1.5 mm 155700 2,8X1,5
Garant

Mini Counterbore for Through Holes, 180 Deg, Uncoated, 2.8X1.5 mm

Zoro # G514389629
Mfr # 155700 2,8X1,5
product price: 
$32.15
/ea
Harvey Tool Counterbores - Flat Bottom, 0.2031" (13/64) 23413-C3
Harvey Tool

Counterbores - Flat Bottom, 0.2031" (13/64)

Zoro # G7153276
Mfr # 23413-C3
product price: 
$78.59
/ea
Drill America No 4 .111mm Machine Screw Solid Counterbore DEWCBRSOL4
Drill America

No 4 .111mm Machine Screw Solid Counterbore

Zoro # G1746835
Mfr # DEWCBRSOL4
product price: 
$9.29
/ea
Harvey Tool Counterbores - Flat Bottom, 0.4375" (7/16), Flute Length: 1" 23428
Harvey Tool

Counterbores - Flat Bottom, 0.4375" (7/16), Flute Length: 1"

Zoro # G7157485
Mfr # 23428
product price: 
$122.99
/ea
Harvey Tool Counterbores - Flat Bottom - Long Reach, 0.2362" 2556M
Harvey Tool

Counterbores - Flat Bottom - Long Reach, 0.2362"

Zoro # G7164799
Mfr # 2556M
product price: 
$106.99
/ea
Harvey Tool 1/4 in. Cutter dia. x7/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731616-C3
Harvey Tool

1/4 in. Cutter dia. x7/8 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G111325242
Mfr # 731616-C3
product price: 
$79.89
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 10X4.2 mm 156220 10X4,2
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 10X4.2 mm

Zoro # G514375578
Mfr # 156220 10X4,2
product price: 
$23.65
/ea
Harvey Tool 0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated 23689-C3
Harvey Tool

0.2900'' Cutter DIA x 0.8750'', 7/8 Flute Length - 4 FL - AlTiN Coated

Zoro # G713082161
Mfr # 23689-C3
product price: 
$94.15
/ea
Harvey Tool Counterbores - Flat Bottom 23330
Harvey Tool

Counterbores - Flat Bottom

Zoro # G301019968
Mfr # 23330
product price: 
$51.59
/ea
Harvey Tool 1/8 in. Cutter dia. x 1/2 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated 731608-C3
Harvey Tool

1/8 in. Cutter dia. x 1/2 in. Flute Length Carbide Flat Bottom Counterbore, 4 Flutes, AlTiN Coated

Zoro # G911325152
Mfr # 731608-C3
product price: 
$63.19
/ea
Garant Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 15X6.8 mm 156220 15X6,8
Garant

Counterbore for Tapping Drill Holes, 180 Deg, Uncoated, 15X6.8 mm

Zoro # G614375508
Mfr # 156220 15X6,8
product price: 
$39.55
/ea
Harvey Tool Counterbores - Flat Bottom 23380
Harvey Tool

Counterbores - Flat Bottom

Zoro # G901019214
Mfr # 23380
product price: 
$50.15
/ea
Harvey Tool Counterbores - Flat Bottom 23350-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G401019455
Mfr # 23350-C3
product price: 
$59.59
/ea
Harvey Tool Counterbores - Flat Bottom 23340
Harvey Tool

Counterbores - Flat Bottom

Zoro # G401019899
Mfr # 23340
product price: 
$51.79
/ea
Garant Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.3 mm 156020 8X4,3
Garant

Counterbore for Through Holes, 180 Deg, Uncoated, 8X4.3 mm

Zoro # G014389464
Mfr # 156020 8X4,3
product price: 
$20.39
/ea
Harvey Tool 0.2187 in. 7/32 Cutter dia x 0.75in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes 731614
Harvey Tool

0.2187 in. 7/32 Cutter dia x 0.75in. 3/4 Flute Length Carbide Flat Bottom Counterbore, 4 Flutes

Zoro # G511325170
Mfr # 731614
product price: 
$70.69
/ea
Harvey Tool Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: Uncoated 23424
Harvey Tool

Counterbores - Flat Bottom, 0.3750" (3/8), Finish - Machining: Uncoated

Zoro # G7150920
Mfr # 23424
product price: 
$99.39
/ea
Harvey Tool 0.1968 in. Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated 2345M-C8
Harvey Tool

0.1968 in. Cutter dia. x .75 in. 3/4 Carbide Flat Bottom Counterbore, 4 Flutes, TiB2 Coated

Zoro # G311324779
Mfr # 2345M-C8
product price: 
$78.59
/ea
Harvey Tool Counterbores - Flat Bottom 23340-C3
Harvey Tool

Counterbores - Flat Bottom

Zoro # G701019278
Mfr # 23340-C3
product price: 
$60.49
/ea
Drill America No 5 .141 Continuous Pilot Capscrew Counterbore DEWCSCBR5
Drill America

No 5 .141 Continuous Pilot Capscrew Counterbore

Zoro # G1739640
Mfr # DEWCSCBR5
product price: 
$25.15
/ea
Super Tool Counterbore, 1-11/16" D, Carbide Tipped 56429
Super Tool

Counterbore, 1-11/16" D, Carbide Tipped

Zoro # G0329931
Mfr # 56429
product price: 
$333.99
/ea
Super Tool Counterbore, 15/16" D, Carbide Tipped 56412
Super Tool

Counterbore, 15/16" D, Carbide Tipped

Zoro # G0329959
Mfr # 56412
product price: 
$158.99
/ea
Super Tool Counterbore, 1-3/4" D, Carbide Tipped 56424
Super Tool

Counterbore, 1-3/4" D, Carbide Tipped

Zoro # G0329651
Mfr # 56424
product price: 
$294.99
/ea
Super Tool Counterbore, 1-15/16" D, Carbide Tipped 56427
Super Tool

Counterbore, 1-15/16" D, Carbide Tipped

Zoro # G0330038
Mfr # 56427
product price: 
$445.99
/ea
Hhip MT2 Shank For 21 Piece Counterbore Set No 2007-0021 2007-0022
Hhip

MT2 Shank For 21 Piece Counterbore Set No 2007-0021

Zoro # G2468263
Mfr # 2007-0022
product price: 
$27.29
/ea
Super Tool Counterbore, 5/8" D, Carbide Tipped 56407
Super Tool

Counterbore, 5/8" D, Carbide Tipped

Zoro # G0330010
Mfr # 56407
product price: 
$112.99
/ea
Super Tool Counterbore, 15/16" D, Carbide Tipped 59812
Super Tool

Counterbore, 15/16" D, Carbide Tipped

Zoro # G0330220
Mfr # 59812
product price: 
$153.99
/ea
Super Tool Counterbore, 1" D, Carbide Tipped 59813
Super Tool

Counterbore, 1" D, Carbide Tipped

Zoro # G0330309
Mfr # 59813
product price: 
$148.99
/ea
Link Ua5-1/4 English Shcs HSS Counterbore 60-L2-297
Link

Ua5-1/4 English Shcs HSS Counterbore

Zoro # G7644859
Mfr # 60-L2-297
product price: 
$29.29
/ea
Counterbores (927 items) - Page 4
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About Counterbores

Counterbores are specialized tools utilized in creating enlarged, flat-bottomed holes in various materials, primarily metal. They're essential when a fastener's head needs to be level with or beneath the surface of the worked material. Available in an array of sizes and shapes, these tools can accommodate diverse types of fasteners and feature different tip configurations like straight flute or spiral flute based on their intended use. Counterboring speeds differ according to the material being processed. These durable tools are typically crafted from high-speed steel (HSS) or cobalt steel for enhanced cutting performance, sometimes coated with titanium nitride (TiN) for superior wear resistance and lubricity when dealing with tougher materials such as stainless steel or aluminum. Industries ranging from automotive manufacturing and aerospace engineering to medical device production widely employ counterbores for precise hole creation necessary for mounting screws and other fasteners.

Related Categories

Hole SawsJobber Length Drill BitsCountersinksReduced Shank Drill BitsDrill Bit Sets
Hammer Drill BitsCenter DrillsTap SetsAuger Drill BitsTap Wrenches
cleveland counterborecounter bore pilot5/8 counterborepilot counterboreinterchangeable pilot counterbore
high speed steelmetric shcs1-1/4 in counterbore6-piece damask jacquard/solidcounter bore set

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